About a month ago, I looked into the possibility of obtaining an engineering sample of a 5mW 405nm diode from Nichia in Japan. Nichia invented 405nm diode technology, for those who don't know. They wanted over $2000 for one 5mW diode with identical specs to any blu-ray sled diode. I'm not sure why certain manufacturers and suppliers are charging so much for them, when they can be had for less than $50 on the street. All I know is that I'll be getting them from ebay suppliers before I"ll crack open my wallet to the tune of 2 grand.
I use these two parts and connected them to a Diode test bed with an adjustable driver. The driver adjusts from 1 to 1000mA's. Once I receive a diode, I can quickly test it to whatever power setting I want. I have also used it to test units to determine if the problem is with a diode or its' driver through a process of elimination. The cable is handy because it has ESD protection. The socket allows me to just pop the diode onto the test bed without any soldering, etc.